Auduino Granular Synthesis – Part 2

After having an initial look at the Auduino project, I was very interested in finding out more about how it worked, but the Internet seems somewhat mute on the subject and I've not found any information from the original author. If you know of such a link, be sure to let me know (at the … Continue reading Auduino Granular Synthesis – Part 2 →

Auduino Granular Synthesis

The Auduino project (not a typo - AUduino as in "audio arduino") by Peter Knight has been around a while (over 10 years!) and is many people's introduction to digital synthesis on the Arduino, so inspired by reading about someone else's recent build I thought it was time to take a look myself. In part … Continue reading Auduino Granular Synthesis →

AD9833 MIDI Signal Generator – Part 2

This project builds on the AD9833 MIDI Signal Generator and adds a second signal generator for some simple additive synthesis. https://www.youtube.com/watch?v=32NULaB28QM&feature=youtu.be Warning! I strongly recommend using an old or second hand keyboard for your MIDI experiments. I am not responsible for any damage to expensive instruments! These are the key Arduino tutorials for the main concepts used … Continue reading AD9833 MIDI Signal Generator – Part 2 →

AD9833 MIDI Signal Generator

This project adds MIDI receiving to the AD9833. In part 2 I add a second oscillator. In this final part, I add multiple oscillators. https://www.youtube.com/watch?v=E7y-fDsf5tE&feature=youtu.be Warning! I strongly recommend using an old or second hand keyboard for your MIDI experiments. I am not responsible for any damage to expensive instruments! These are the key Arduino tutorials … Continue reading AD9833 MIDI Signal Generator →

AD9833 Signal Generator – Part 2

This is the next stage of experimenting with the AD9833. This time adding some control to the device. https://youtu.be/yoGaWoMqsuA Warning! I strongly recommend using an old or second hand keyboard for your MIDI experiments. I am not responsible for any damage to expensive instruments! These are the key Arduino tutorials for the main concepts used in … Continue reading AD9833 Signal Generator – Part 2 →

AD9833 Signal Generator

I've picked up some cheap AD9833 based signal generator boards which look particularly interesting as they are programmable frequency generators capable of generating a sine, square or triangle wave at frequencies up to 12.5MHz and are controlled using the SPI bus from the Arduino. In part 2, I add some simple controls. In this part, … Continue reading AD9833 Signal Generator →

Arduino MIDI R2R Digital Audio

With all the excitement of experimenting with Mozzi, I never really finished my R2R digital audio series. This final part adds MIDI to the R2R shield I built in Arduino R2R Digital Audio – Part 3. https://youtu.be/i6Y9QiTxTeQ Warning! I strongly recommend using an old or second hand keyboard for your MIDI experiments. I am not responsible for … Continue reading Arduino MIDI R2R Digital Audio →

Arduino R2R Digital Audio – Part 3

So this is where we start to get closer to some proper direct digital synthesis using the hardware developed in part 1 and moving on from the timer-driven code developed in part 2. In Arduino MIDI R2R Digital Audio I add MIDI. In Arduino PWM Sound Output I talk more about the theory of PWM. https://youtu.be/1MPNHMQ-2vs The … Continue reading Arduino R2R Digital Audio – Part 3 →

Arduino R2R Digital Audio – Part 2

Building on the Arduino R2R Digital Audio project, this uses the Arduino Timer functions to run our code in a more accurate and useful way. I've now also added some potentiometers to my shield and a jack output socket. In Arduino R2R Digital Audio - Part 3 the code is developed further to support wavetable synthesis. In Arduino … Continue reading Arduino R2R Digital Audio – Part 2 →

Arduino R2R Digital Audio

This project shows an example of digital to analogue synthesis. Technically this is what is called direct digital synthesis, but in its most basic form. In Arduino R2R Digital Audio - Part 2 I add some control and develop the code further. In Arduino R2R Digital Audio - Part 3 the code is developed further to support … Continue reading Arduino R2R Digital Audio →